The person spoke to The Associated Press on Thursday on condition of anonymity because there had been no official announcement. A news conference was expected Saturday at the Yankees' spring training complex in Tampa, Fla.
The 43-year-old right-hander is baseball's saves leader with 608. He missed most of last season after he tore a ligament in his right knee while catching fly balls during batting practice.
Rivera has returned home to Panama for a personal matter, and is expected to rejoin the team Saturday.
More Sports Headlines
Goff throws 4 TD passes as Cal rallies to beat Cougars 34-28 4:36 p.m. Seahawks' Lynch, Mebane to be game-time decisions Monday night 7:08 p.m. Nats' Scherzer strikes out 17 Mets as he pitches 2nd no-hitter of season 6:38 p.m. Texas staggering after troubling 50-7 loss to No. 4 TCU 5:38 p.m. Tulane long snapper is first legally blind player to play in D-I game 5:36 p.m. Sounders have 2009 flavor for 2015 stretch run 5:26 p.m. Angels score 5 in 9th, beat Rangers 11-10 5:24 p.m. No. 1 Ohio State hangs on to beat Indiana 34-27 5:24 p.m.
Our new comment system is not supported in IE 7. Please upgrade your browser here.